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Finding the Fourth Proportional to 276,728.10, 415,092.15 and 271,479.30

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Solution

The fourth proportional to 276,728.10, 415,092.15 and 271,479.30 is: 407,218.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,728.10 : 415,092.15 = 271,479.30 : x
  2. Step 2: Convert to fraction form
    276,728.10/415,092.15 = 271,479.30/x
  3. Step 3: Cross multiply
    276,728.10x = 415,092.15 × 271,479.30
  4. Step 4: Simplify right side
    276,728.10x = 112,688,926,317.50
  5. Step 5: Solve for x
    x = 112,688,926,317.50/276,728.10
  6. Step 6: Final answer
    x = 407,218.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.